Reverse-gear mechanism.



f H. 1. PERKINS. REVERSE GEAR MECHANISM.

APPLICATION FlLE`D MAR. I5, 19.15.

1,166,479, Patented Jan. 4, 191.6J

FIG. l I l F116.. 2

1 HRI@ n l5 4; lf 1.9 zo 125 Q,"

o 25,9* 2 5 `8' a 5 @gg 5gas a 1- 25242627 Wi/Wm.

` 1 f by 7m NMNEYS.,

COLUMBIA PLANDGRAPH C0..wAIsmN0ToN, D. c. v

HARRY zr. PRRKINsYoF GRAND RAPIDS; MroHGANQ RVRRS'LGRAR MncHAnIsM.'

Specification" of Letters Patent.

Appli-ation fndrrarbh 15, 191'5. sentirti-14,3632

' To ZZ whom/it may concern.'

Be it known that' I, HARRY J. PERKINS; a citizen oi the United States,- residingati Grand Rapids, lVIichigang-have'invented cer tain new and useful Improvements in-.Refv verse-Gear Mechanism', oi which thel fol# lowing is a speciiicationa This invention relates toA reverse gear mech anism.

The objectso'f my' invention are: First', to' provide anV improved construction whereinv on' the direct drive there'fwilllbeno strain or wor-kA on the reverse gears or on theteeth of thefpinions4 thereof. Second, to provide' an'improved mearsfor holding the gear cage? or drumonY the reverse.: Third, to'provide in a compact structure: of the class'V described a: largeffrictionalAA area-v in the clutch.` Fourth, to provide improved? combined" gear and clutch structures: Fifth, tofprovidezan improved means* of 'securing the neutral Shift;

Further objects; and? objects relatingto: details and economies ofv construction: and' operation willdefnitely'appear from the'def tailed description to follow.

I- accomplish the objects or this 'invention' by the devices and meansdescribed 'in' the following speciicationc y' The inventionr is clearly defined andlpoin'ted out inthe claims: f

y A- structure constituting' a? preferred' emi vbodiment-ofnay-invention is clearly illus;

tra-ted in theaccompanying drawing forming' apartof this specification 1n which/z` Figure 1 is-a side'felevatio'n-showingfsinr pl-icityofl construction, 'control lever` con'l nected by bracket from brake band, com# pletein itselrQreadyto install. Fig. 2 isY an end elevation showing lugs or supporting" arms on each side of the drum andrea'rbean ing for supportingvto the ibed'plate.- Fig." 3

is a longitudinal` vertical s'ection on: centerf line of shaft, showing :'the mechanism compressedtogether 'and the 'dislsectirely locked i as a solid-couplingfforwardf motion or directl drive. Fig:` l is a longitudinal vertical section on center line of shaft showing the drum heldat rest, `or-fom revolvingfby lock on top oit-brake band as infreverseniotionor backingf up. Fig.y 5 rvis atransverse section of the reversing planetary gearing and brake" band centerlock betweentwo lugs on-bra'ke band, also lshowingthebridge ins` gear case 'v between the pinions 'to'ho'ldlas asolidpieceto the.,two.pinion.-beari11gs, section takengonj,

Fig. 3. Fig. 6; is anE enlarged detail' sec-l tionalvi'e'w' on line' 6 6 of Fig'. 5, showing theband clutching means; A l l y In the drawing similar nu'morals-of reference refer to similar` parts throughout' the' severall views, andf the sectional views; are takenflooking in the'direction ofthe' little arrows at the endsof thesectionlines:

Considering the numbered' parts oit thel drawing, l isV the gear' cage4 havingbrid'ge? RD srArns PATENT ernten.

bars2 connected to-theinner ringlglmaking itvsubstant'ially af one' piece structure'.l The p inions lf are carried on pins 5; rEhe case-6 forms a drum, onefhead' of which is" formed by the "gear cagef'lwhichissecured theretoV headl S'is integralV and entends `r intofafhub 9 provided with' aA suitable bushing. 10 within which`r revolvingf partsa're :r journaled i The driving shattl 11 is 'keyedC or otherwise se- 'by bolts or cap screws 7 and the oppositel l cured'to the hub 12 which is journaledinfthe -f gear cage-1. A spur lgear`1-3 isffor'med onr this lhub that meshes withthe pinionsv 1S The inner endl of' the hub* is formed with' tfeethi 14, like spur gears,- t'o' egagca? the clutchf disks'. hub 12 is'` a broilzebushing- 15"-intoawlichf the end of the"driven-rshait 16'isf'journaled,y thereby: keepingV the driving" and driven shafts f in-'alinement and*providingr a-l thrust-f bearing -for the "hub ofv'the'driving shaft? An internalgea-r 17 embraces-andmeshesA witht the pinionsf il, the toothed part: beingconsiderably longer than the length off1-the saidA ,pinions for purpose hereafter to be? extends intofahub 19lad isprovidednwithf a key way 2OY which is-engaged bya'` key 'orfeather 21 on the saidshaft,f-whereby-the said internal gear mayy be shiftedslongitul', dinally.V The portion o'fthefteeth-of said? gear nearest thef crownP are provided.l 'for-Ten ga-gingl disk members oft fai"- clutch, and Qthe':

entire jgea-r '17 isfadaptedt0 slide axially'.

vwithin-thecase 6, theqsaid gear rittingwa I dispose a disk clutch, the alternate disks being notched to engage the internal gear and the teeth 14 on the end of the hub, as many disks being made use of as are necessary for the proper manipulation under the power specified. Y The disks are cut on their peripheries like spur gears to engage the -internal gear all the way around, and the alternate disks are cut like internal gears to engage the teeth 14 on the hub, so that there is very intimate connection between the disks and the parts to be clutched.

Dispcsed within the case 6 is a bearing ring 23 to form a bearing surface for the outside of the crown of the gear 17, and this carries axially disposed thrust pins 24 whereby pressure is put upon the internal gear when it coacts with the other parts in clutching. On the hub 9 I secure adjustably by screw threads a ring 25 having oppositely projecting ears 26 on which are pivoted a pair of levers 27 so disposed as to exert pressure on the thrust pins 24. A lock nut 25 is provided to lock the same when adjusted.

A sliding sleeve 28 is on the driven shaft 16 and is actuated by the control lever 29, which is forked in the usual manner and secured to the collar 30 on the said sleeve and is fulcrumed at 31. On the sleeve 28 is a loosely fitting collar 32 with oppositely projecting ears 33 which are connected by links 34 to the ends of the levers 27 respectively. A coil spring 35 surrounds the sleeve 28 and holds the collar 32 yieldinglv in position. Lock nuts 36 form an adjustable stop on the inner end of the said sleeve 28.

A bearing block 37 carries a suitable ball thrust bearing 38 which engages the thrust collar 39 on the driven shaft 16 which prevents axial movement thereofl and holds the shaft to its work. A stop collar 28 on driven shaft 16 is provided for the sleeve 28. Brackets 31 are provided on the bearing block 37 to carrv the fulcrum 31 of the control lever 29. The fulcrum 31 of this control lever can be carried by rods 31a secured to the brake bands.y as illustrated in Fig. l, and the lever may be compound, as illustrated in Fig. 3.

The brake band 40 which embraces the shell of the case 6 is made of two parts having upwardly projecting lugs 41 at the top between which extends the thrust bar 42 which is pivoted at 43 to the control lever 29. The lugs 41 are perforated and are coupled together by a sleeve member 44 having a suitable head 45 within which is disposed a pin 46 which is slotted at its inner end at 47 and provided with an anti-friction roller 48. The sleeve 44 is corresnondinglv slotted at 44. The outer end of the pin 46 is provided with a collar 49 and lock nuts 50 are screw threaded on said pin as an adjusting means. The thrust bar 42 is dis1 posed between the lugs 41 and has an inclined surface or cam surface, which engages the anti-friction roller 48, and the opposite side is straight and plays against the opposite end of the slot 44 so that on manipulation of the control lever 29 the brake band 40 is either released or clamped, depending on the direction of movement of the lever.

The various parts having thus been described in detail, their operation will be readily7 understcod.

lV hen the control lever 29 is thrown for ward to the position indicated in Fig. 3, the sleeve 28 is moved to the rear and actuates the toggle formed b v the links 34, thereby actuating the levers 27 and closing the clutch and releasing the brake band, so that the power is transmitted to the driven shaft direct. W'hen the control lever 29 is moved to the rear, as indicated in Fig. 4, the brake band is clamped upcn the case, the sleeve is carried forward and acts upon the toggle to withdraw the levers 27 and release the clutch, whereupon the spur gear 23 drives the pinions 4, which, being in mesh with the internal gear 27, reverses the driven shaft, driving it in this instance at one-half speed. The ratio may be according to any specilication within the limits of the mechanism. lhen the control lever 29 is in the perpendicular or intermediate position, both the reverse brake band and the clutch levers are released sothat no power or motion will be transmitted from the driving to the driven shaft. This is accomplished by providing for a little lost motion for the collar 32 by the proper adjustment of the lockv nuts 36.

I have described my improved reverse gear mechanism in detail and believe that the particular details are possessed of high merit, and desire to claim the same specifically. At the same time there are manv features which are capable of modification and I also desire to claim the invention broadly in such particulars, as pointed out in the appended claims.

Having thus described my invention, what I claim as new and desire to secure bv Letters Patent is: D

1. In a reverse gear mechanism, the combination of a driving` shaft. a driven shaft, a spur gear carried by said driving shaft with toothed extension at the inner end, a gear cage with pinions meshing with said spur gear, a ring carried by the said gear cage at its inner end, a case or drum one'end of which is closed by the said gear cage and the opposite end closed and extended into a hub provided with a journal bearing for the internal gear hub, an internal gear with teeth longer than the said pinions disposed to mesh therewith, the crown of which is extended in a hub embracing the driven shaft and having a' bearing within the case c nice-,47e I and with a key 'seat within, a keyv on said driven shaft engaging said key seat whereby the internal gear is movable axially, a plate withinv the crown of the internalgear parallel to the gear cage ring, clutch disks toothed to y alternately engage the internal gear teeth and the toothed extension of the spur gear, 'a bearing plate within the casing with axially disposed thrust pins extending beyond the casing, an adjustable collar on the hub of said casing with laterally projecting ears, levers pivoted in said ears disposed to act upon the thrust pins, a sliding sleeve with toggle connections disposed upon the driven shaft to actuate said levers, a suitable con` spur gear, a ring carried by the said gear4 cage at its inner end, a case or drum one end of which is closed by the said gear cage and the opposite end closed and extended into a hub provided with a journal bearing for the internal gear hub, an internal gear with teeth longer than the said pinions disposed to mesh therewith, the crown of which is extended in a hub embracing the driven shaft and having a bearing Within the case and with a key seat within, a key on said driven shaft engaging said key seat whereby the internal gear is movable axially, clutch disks toothed to alternately engage the internal gear teeth and the toothed extension of the spur gear, a bearing plate within the casing with Vaxially disposed thrust pins 'extending beyond the casing, an adjustable collar on the hub of said casing with laterally projecting ears, levers pivoted in said ears disposed to act upon the thrust pins, a sliding sleevev with toggle connections disposed upon the driven shaft to actuate said levers, a suitable control le-V ver connected to said clutch, a brake band around said casing, and connections from the control lever for controlling said brake band, as specified.

3. In a reverse gear mechanism, the combination vof a driving shaft, a driven shaft, a spur gear carried by said driving shaft with toothed extension at the inner end, a gear cage with pinions meshing with said spur gear, a ring carried by the said gear cage at its inner end, a case or drum one end of which is closed by the said gear cage and the opposite end closed and extended into a hub provided with a journal bearing for the internal gear hub,van internal gear with teeth longer than the said pinions disposed to mesh therewith, the crown of which specified. y .y

is extended :in ta hub embracing the driven shaft and having a bearing within they case and with a; key seat within, a key-on saidl driven shaft engaging said key seat wherebythe internal gear is movable axially, a plate within the 'crown of the internal gear parallel .to the gear cage ring, clutch disks toothed to alternatelyengage the internal gear teeth and the toothed extension of the spurggear, a suitable control lever connected to'fsaid clutch, brake band aroundV said casi-ng,l *and connect-ions' from` the control lever for controlling said. brake band, as

l 41;. in a reverse gear mechanism, thecombination of a driving shaft, a driven shaft, a spur gear carried vby said driving shaft 'with toothed extension at the inner end, a

gear cage with pinions meshing with said spur gear, ai ring carried by the said gear cage at its inner end, a case or drum one end of which is closed by the said gear Cage and the opposite end closed and extended into a hub provided witha journal bearing for the internal gear hub, an internal gear with teeth longer than t-he vsaid pinions disposed to mesh therewith, the crown of which is lextended in a hub embracing the driven yshaft and having a bearing within the case and with a key seat within, a key on said driven shaftl engaging said key seat whereby the interna-l gear is movable axially, clutcl'i disks toothed to alternately engage theinternal gear teeth and the toothed eX- tension of the spur gear, a suitable control lever connected to said clutch, a brake band around said casing, and connections from the control lever for controlling said brake band, as specified.

5. In a. reverse gear mechanism, the combination of a driving shaft, a driven shaft,

` a spur gear carried by said driving shaft with'suitable toothed extension, a gearcage with pinions meshing with said spur gear, a clutch ring at the inner end of said cage, an internal gear with teeth extendingbeyond the said pinions with its crown extended into a hub having sliding engagementV with the said driving shaft, clutch disks disposed within theinternal gear between the crown thereof and the gear cage, connections to the control lever for actuat. ing said clutch, and a brake mechanism cooperating with said clutch to control the operation of said gearing, as specified.

6. In a. reverse gear mechanism, a driving shaft and a driven shaft, a spur gear on one of said shafts with toothed extension atV its inner end, an internal gear with toothed extension disposed to coperate therewith, a gear cage with pinions disposed to mesh and coperate with said gears, a. clutch with alternate toothed `disks toengage-the internal gear teeth and the spur gear extension, means for actuating saidY clutch, and

a brake mechanism eoperating with said clutch to control the operation of said gearing, as specified.

7. ln a reverse gear mechanism, the corn bination of a spur gear and an internal gear, a gear Cage carrying pinons that ntermesh and connect the spur gear with the internal gear, a clutch mechanism for locking,` said internal gear, a ease for said parts, a brake band surrounding the said case, a Control lever with connections to control said band, a. sliding sleeve, and a collar disposed on said sleeve, connections from said collar for Controlling` said clutch and yielding Connection between said collar and le\er whereby neutral adjustment is attained, as specified.

ln Witness whereof, l have hereunto set my hand and seal in the presence of two Witnesses.

HARRY J. PERKINS.

Witnesses LUELLA G. GREENFIELD, MARGARET L. GLASGOW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

